Change device name

[laktosterror]

Hi Pieter!

Im having an issue with changing name of my teensy lc. Seems like name is already defines in control surface library. I searched the documentation for device name change but could'nt find anything.

I did however find the files in wich the names are defined: libraries\Control-Surface-1.2.0\src\MIDI_Interfaces\Teensy-USB-MIDI-name.c + .py

it says in .c name should not be changed here, but in .py file. However im not sure how the .py file whould be read? is it read during compilation?

Any help/explanation is appreciated.

Thank you for your time, take care!

Describe the bug probably not a bug.

To Reproduce create name.c file:

#include <usb_names.h>

#define MANUFACTURER_NAME  {'m','y','N','a','m','e'}
#define MANUFACTURER_NAME_LEN 6
#define PRODUCT_NAME    {'S','o','m','e','t','h','i','n','g'}
#define PRODUCT_NAME_LEN  9

struct usb_string_descriptor_struct usb_string_manufacturer_name = {
  2 + MANUFACTURER_NAME_LEN * 2,
  3,
  MANUFACTURER_NAME
};
struct usb_string_descriptor_struct usb_string_product_name = {
  2 + PRODUCT_NAME_LEN * 2,
  3,
  PRODUCT_NAME
};

add file name.c to sketch and compile.

Expected behavior name.c file should change device name.

Code

#include <Control_Surface.h>

USBMIDI_Interface midi; // MIDI Interface to use
 
Bank<2> bank(2);

IncrementSelectorLEDs<2> bankSelector {
  bank,
  {3},         // button pins
  {4, 5}, // LED pins
};
 
using namespace MIDI_CC;
Bankable::CCButtonLatched<2> lat[] {
  {{bank, BankType::CHANGE_ADDRESS}, 23, {Sound_Controller_1, CHANNEL_1}},
  {{bank, BankType::CHANGE_ADDRESS}, 20, {Sound_Controller_2, CHANNEL_1}},
  {{bank, BankType::CHANGE_ADDRESS}, 18, {Sound_Controller_3, CHANNEL_1}},
  {{bank, BankType::CHANGE_ADDRESS}, 15, {Sound_Controller_4, CHANNEL_1}},
};

Bankable::CCPotentiometer Potentiometer [] {
  {{bank, BankType::CHANGE_CHANNEL}, A0, {Sound_Controller_5, CHANNEL_1}},
};

void setup() {
  Control_Surface.begin();
}
 
void loop() {
  Control_Surface.loop();
}

Error

C:\Users\B\AppData\Local\Temp\arduino_build_315404\libraries\Control-Surface-1.2.0\MIDI_Interfaces\Teensy-USB-MIDI-name.c.o:(.data.usb_string_product_name+0x0): multiple definition of `usb_string_product_name'
C:\Users\B\AppData\Local\Temp\arduino_build_315404\sketch\name.c.o:(.data.usb_string_product_name+0x0): first defined here
c:/program files (x86)/arduino/hardware/tools/arm/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: Disabling relaxation: it will not work with multiple definitions
c:/program files (x86)/arduino/hardware/tools/arm/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: Warning: size of symbol `usb_string_product_name' changed from 20 in C:\Users\B\AppData\Local\Temp\arduino_build_315404\sketch\name.c.o to 32 in C:\Users\B\AppData\Local\Temp\arduino_build_315404\libraries\Control-Surface-1.2.0\MIDI_Interfaces\Teensy-USB-MIDI-name.c.o
collect2.exe: error: ld returned 1 exit status
Error compiling for board Teensy LC.

[tttapa]

The idea is that you change the names in Teensy-USB-MIDI-name.py (the first 20 lines), and then run the file manually.

If you don't have Python installed, you can edit the Teensy-USB-MIDI-name.c file if you want, it won't break anything. Or you can delete Teensy-USB-MIDI-name.c altogether if you want to be able to set the name in each sketch individually.

[laktosterror]

Ah i see, is it perhaps for when using a teensy with multiple virtual cables? Removing the Teensy-USB-MIDI-name.c did the trick!

Thank you for your help! Is there a way i give back, while not being a seasoned programmer?

Take care